annotate py/uploader.py @ 622:5b456905eaac rust

use libc. update.
author Matt Johnston <matt@ucc.asn.au>
date Sun, 16 Apr 2017 22:50:05 +0800
parents 78c542f03030
children 6bacd8ca9f8f 424f1446f214
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1 import json
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2 import hmac
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3 import hashlib
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4 import zlib
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5 import binascii
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6 import logging
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7 import asyncio
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8
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9 import aiohttp
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10
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11 import config
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12 from utils import L,D,EX,W,E
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13 import utils
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15 class Uploader(object):
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16 def __init__(self, server):
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17 self.server = server
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18 self.limitlog = utils.NotTooOften(600)
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20 @asyncio.coroutine
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21 def run(self):
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22 # wait for the first read
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23 yield from asyncio.sleep(5)
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24 while True:
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25 yield from self.do()
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26 yield from asyncio.sleep(config.UPLOAD_SLEEP)
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28 def get_tosend(self, readings):
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29 tosend = {}
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31 tosend['fridge_on'] = self.server.fridge.is_on()
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33 tosend['now'] = self.server.now()
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34 tosend['readings'] = readings
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35
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36 tosend['wort_name'] = self.server.wort_name
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37 tosend['fridge_name'] = self.server.wort_name
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38
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39 tosend['current_params'] = dict(self.server.params)
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40 tosend['current_params_epoch'] = self.server.params.get_epoch()
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41
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42 tosend['start_time'] = self.server.start_time
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43 tosend['uptime'] = utils.uptime()
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45 return tosend
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46
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47 class BadServerResponse(Exception):
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48 pass
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49
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50 @asyncio.coroutine
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51 def send(self, tosend):
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52 js = json.dumps(tosend)
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53 if self.server.test_mode():
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54 D("Would upload %s to %s" % (js, config.UPDATE_URL))
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55 return
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56 js_enc = binascii.b2a_base64(zlib.compress(js.encode())).strip()
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57 mac = hmac.new(config.HMAC_KEY.encode(), js_enc, hashlib.sha256).hexdigest()
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58 send_data = {'data': js_enc.decode(), 'hmac': mac}
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59 r = yield from asyncio.wait_for(aiohttp.request('post', config.UPDATE_URL, data=send_data), 60)
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60 result = yield from asyncio.wait_for(r.text(), 60)
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61 if r.status == 200 and result != 'OK':
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62 raise BadServerResponse("Server returned %s" % result)
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64 @asyncio.coroutine
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65 def do(self):
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66 try:
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67 readings = self.server.take_readings()
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68 tosend = self.get_tosend(readings)
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69 D("tosend >>>%s<<<" % str(tosend))
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70 nreadings = len(readings)
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71 yield from self.send(tosend)
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72 readings = None
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73 D("Sent updated %d readings" % nreadings)
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74 except aiohttp.errors.ClientError as e:
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75 self.limitlog.log("Error with uploader: %s" % str(e))
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76 except asyncio.TimeoutError as e:
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77 self.limitlog.log("uploader http timed out: %s" % str(e))
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78 except self.BadServerResponse as e:
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79 self.limitlog.log("Bad reply with uploader: %s" % str(e))
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80 except Exception as e:
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81 EX("Error in uploader: %s" % str(e))
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82 finally:
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83 if readings is not None:
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84 self.server.pushfront(readings)